川楝花挥发油的GC-MS分析

GC-MS analysis of the essential oil from the flowers of Melia toosendan

目的比较研究新鲜和干燥川楝花的挥发油化学成分。方法采用GC-MS联用技术对新鲜和干燥川楝花化学成分进行分析。结果从新鲜川楝花中共分离出22个峰,鉴定出了16个化合物,占挥发油总含量的72.73%,主要为烷烃类化合物,此外还存在含氮和含氯化合物;干燥川楝花中共分离出41个峰,鉴定出了33个化合物,占挥发油总含量的80.49%,主要为醇类和酸类化合物,并且不存在含氮和含氯化合物。用峰面积归一化法得到各组分的相对含量。结论首次对新鲜和干燥川楝花挥发油进行了提取和分析比较。

Objective To analyze the chemical constituents of the essential oil from the fresh and the dried flowers of Melia toosen-dan .Methods The chemical components of the essential oil were analyzed by GC-MS .Results 22 peaks were separated totally , and 16 compounds were identified from the fresh flowers ,which accounted for 72 .73% .The oil contained mainly alkanes ,also contained nitrogen and chlorine compounds .41 peaks were separated totally ,and 33 compounds were identified from the dried ones ,which accounted for 80 .49% .The oil contained mainly alcohol and acid compounds ,and didn′t contain nitrogen and chlorine compounds .The relative content of each component was calculated by peak area normalization method .Conclusion It was the first time to extract and analyze the essential oil from the dried and the fresh flowers of Melia toosendan .